What can account for differences in the calculated value of a drug concentration in a sample as determined by standard curve method and response factor method?

Answer 1

You can find a number of sites that discuss this. I typed in analytical method vs drug response factor method. Here is one site but many came up.
https://www.inkling.com/read/ansel-pharmaceutical-dosage-form-drug-delivery-9th/chapter-4/physical-pharmacy-capsule-4-14

Answer 2

Thanks I tried searching myself but I guess I didn't word it the correct way. Wasn't finding anything so I came here.